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foreign_storage::CachingForeignStorageMgr Class Reference

#include <CachingForeignStorageMgr.h>

+ Inheritance diagram for foreign_storage::CachingForeignStorageMgr:
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Public Member Functions

 CachingForeignStorageMgr (ForeignStorageCache *cache)
 
void fetchBuffer (const ChunkKey &chunk_key, AbstractBuffer *destination_buffer, const size_t num_bytes) override
 
void getChunkMetadataVecForKeyPrefix (ChunkMetadataVector &chunk_metadata, const ChunkKey &chunk_key_prefix) override
 
void refreshTable (const ChunkKey &table_key, const bool evict_cached_entries) override
 
- Public Member Functions inherited from foreign_storage::ForeignStorageMgr
 ForeignStorageMgr ()
 
AbstractBuffercreateBuffer (const ChunkKey &chunk_key, const size_t page_size, const size_t initial_size) override
 
void deleteBuffer (const ChunkKey &chunk_key, const bool purge) override
 
void deleteBuffersWithPrefix (const ChunkKey &chunk_key_prefix, const bool purge) override
 
AbstractBuffergetBuffer (const ChunkKey &chunk_key, const size_t num_bytes) override
 
void fetchBuffer (const ChunkKey &chunk_key, AbstractBuffer *destination_buffer, const size_t num_bytes) override
 
AbstractBufferputBuffer (const ChunkKey &chunk_key, AbstractBuffer *source_buffer, const size_t num_bytes) override
 
void getChunkMetadataVecForKeyPrefix (ChunkMetadataVector &chunk_metadata, const ChunkKey &chunk_key_prefix) override
 
bool isBufferOnDevice (const ChunkKey &chunk_key) override
 
std::string printSlabs () override
 
void clearSlabs () override
 
size_t getMaxSize () override
 
size_t getInUseSize () override
 
size_t getAllocated () override
 
bool isAllocationCapped () override
 
void checkpoint () override
 
void checkpoint (const int db_id, const int tb_id) override
 
AbstractBufferalloc (const size_t num_bytes) override
 
void free (AbstractBuffer *buffer) override
 
MgrType getMgrType () override
 
std::string getStringMgrType () override
 
size_t getNumChunks () override
 
void removeTableRelatedDS (const int db_id, const int table_id) override
 
bool hasDataWrapperForChunk (const ChunkKey &chunk_key)
 
bool isDatawrapperRestored (const ChunkKey &chunk_key)
 
void setDataWrapper (const ChunkKey &table_key, std::shared_ptr< MockForeignDataWrapper > data_wrapper)
 
void setParallelismHints (const std::map< ChunkKey, std::set< ParallelismHint >> &hints_per_table)
 

Private Member Functions

void recoverDataWrapperFromDisk (const ChunkKey &table_key, const ChunkMetadataVector &chunk_metadata)
 
void refreshTableInCache (const ChunkKey &table_key)
 
int getHighestCachedFragId (const ChunkKey &table_key)
 
void refreshAppendTableInCache (const ChunkKey &table_key, const std::vector< ChunkKey > &old_chunk_keys)
 
void refreshNonAppendTableInCache (const ChunkKey &table_key, const std::vector< ChunkKey > &old_chunk_keys)
 
void refreshChunksInCacheByFragment (const std::vector< ChunkKey > &old_chunk_keys, int last_frag_id)
 
void createOrRecoverDataWrapperIfNotExists (const ChunkKey &chunk_key)
 
void populateChunkBuffersSafely (ForeignDataWrapper &data_wrapper, ChunkToBufferMap &required_buffers, ChunkToBufferMap &optional_buffers)
 

Private Attributes

ForeignStorageCachedisk_cache_
 

Additional Inherited Members

- Public Types inherited from foreign_storage::ForeignStorageMgr
using ParallelismHint = std::pair< int, int >
 
- Protected Member Functions inherited from foreign_storage::ForeignStorageMgr
bool createDataWrapperIfNotExists (const ChunkKey &chunk_key)
 
std::shared_ptr
< ForeignDataWrapper
getDataWrapper (const ChunkKey &chunk_key)
 
bool fetchBufferIfTempBufferMapEntryExists (const ChunkKey &chunk_key, AbstractBuffer *destination_buffer, const size_t num_bytes)
 
void createAndPopulateDataWrapperIfNotExists (const ChunkKey &chunk_key)
 
ChunkToBufferMap allocateTempBuffersForChunks (const std::set< ChunkKey > &chunk_keys)
 
void clearTempChunkBufferMapEntriesForTable (const ChunkKey &table_key)
 
void clearTempChunkBufferMapEntriesForTableUnlocked (const ChunkKey &table_key)
 
void getOptionalChunkKeySet (std::set< ChunkKey > &optional_chunk_keys, const ChunkKey &chunk_key, const std::set< ChunkKey > &required_chunk_keys, const ForeignDataWrapper::ParallelismLevel parallelism_level)
 
- Static Protected Member Functions inherited from foreign_storage::ForeignStorageMgr
static void checkIfS3NeedsToBeEnabled (const ChunkKey &chunk_key)
 
- Protected Attributes inherited from foreign_storage::ForeignStorageMgr
std::shared_mutex data_wrapper_mutex_
 
std::map< ChunkKey,
std::shared_ptr
< ForeignDataWrapper > > 
data_wrapper_map_
 
std::map< ChunkKey,
std::unique_ptr
< AbstractBuffer > > 
temp_chunk_buffer_map_
 
std::shared_mutex temp_chunk_buffer_map_mutex_
 
std::shared_mutex parallelism_hints_mutex_
 
std::map< ChunkKey, std::set
< ParallelismHint > > 
parallelism_hints_per_table_
 

Detailed Description

Definition at line 28 of file CachingForeignStorageMgr.h.

Constructor & Destructor Documentation

foreign_storage::CachingForeignStorageMgr::CachingForeignStorageMgr ( ForeignStorageCache cache)

Definition at line 30 of file CachingForeignStorageMgr.cpp.

References CHECK, and disk_cache_.

31  : ForeignStorageMgr(), disk_cache_(cache) {
33 }
#define CHECK(condition)
Definition: Logger.h:197

Member Function Documentation

void foreign_storage::CachingForeignStorageMgr::createOrRecoverDataWrapperIfNotExists ( const ChunkKey chunk_key)
private

Definition at line 273 of file CachingForeignStorageMgr.cpp.

References foreign_storage::ForeignStorageMgr::createDataWrapperIfNotExists(), disk_cache_, get_table_key(), foreign_storage::ForeignStorageCache::getCachedMetadataVecForKeyPrefix(), foreign_storage::ForeignStorageMgr::getDataWrapper(), foreign_storage::ForeignStorageCache::hasCachedMetadataForKeyPrefix(), and recoverDataWrapperFromDisk().

Referenced by fetchBuffer(), and refreshAppendTableInCache().

274  {
275  ChunkKey table_key = get_table_key(chunk_key);
276  if (createDataWrapperIfNotExists(table_key)) {
277  ChunkMetadataVector chunk_metadata;
278  if (disk_cache_->hasCachedMetadataForKeyPrefix(table_key)) {
279  disk_cache_->getCachedMetadataVecForKeyPrefix(chunk_metadata, table_key);
280  recoverDataWrapperFromDisk(table_key, chunk_metadata);
281  } else {
282  getDataWrapper(table_key)->populateChunkMetadata(chunk_metadata);
283  }
284  }
285 }
std::vector< int > ChunkKey
Definition: types.h:37
std::shared_ptr< ForeignDataWrapper > getDataWrapper(const ChunkKey &chunk_key)
ChunkKey get_table_key(const ChunkKey &key)
Definition: types.h:52
void getCachedMetadataVecForKeyPrefix(ChunkMetadataVector &, const ChunkKey &) const
void recoverDataWrapperFromDisk(const ChunkKey &table_key, const ChunkMetadataVector &chunk_metadata)
std::vector< std::pair< ChunkKey, std::shared_ptr< ChunkMetadata >>> ChunkMetadataVector
bool hasCachedMetadataForKeyPrefix(const ChunkKey &) const
bool createDataWrapperIfNotExists(const ChunkKey &chunk_key)

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void foreign_storage::CachingForeignStorageMgr::fetchBuffer ( const ChunkKey chunk_key,
AbstractBuffer destination_buffer,
const size_t  num_bytes 
)
override

Definition at line 60 of file CachingForeignStorageMgr.cpp.

References foreign_storage::ForeignStorageCache::cacheTableChunks(), CHECK, Data_Namespace::AbstractBuffer::copyTo(), createOrRecoverDataWrapperIfNotExists(), disk_cache_, foreign_storage::get_keys_set_from_table(), foreign_storage::get_keys_vec_from_table(), foreign_storage::ForeignStorageCache::getCachedChunkIfExists(), foreign_storage::ForeignStorageCache::getChunkBuffersForCaching(), foreign_storage::ForeignStorageMgr::getDataWrapper(), foreign_storage::ForeignStorageMgr::getOptionalChunkKeySet(), Data_Namespace::AbstractBuffer::isDirty(), and populateChunkBuffersSafely().

62  {
63  CHECK(destination_buffer);
64  CHECK(!destination_buffer->isDirty());
65 
67 
68  // TODO: Populate optional buffers as part of CSV performance improvement
69  std::vector<ChunkKey> chunk_keys = get_keys_vec_from_table(chunk_key);
70  std::vector<ChunkKey> optional_keys;
71  ChunkToBufferMap optional_buffers;
72 
73  // Use hints to prefetch other chunks in fragment into cache
74  auto& data_wrapper = *getDataWrapper(chunk_key);
75  std::set<ChunkKey> optional_set;
76  getOptionalChunkKeySet(optional_set,
77  chunk_key,
78  get_keys_set_from_table(chunk_key),
79  data_wrapper.getCachedParallelismLevel());
80  for (const auto& key : optional_set) {
81  if (disk_cache_->getCachedChunkIfExists(key) == nullptr) {
82  optional_keys.emplace_back(key);
83  }
84  }
85 
86  if (optional_keys.size()) {
87  optional_buffers = disk_cache_->getChunkBuffersForCaching(optional_keys);
88  }
89 
90  ChunkToBufferMap required_buffers = disk_cache_->getChunkBuffersForCaching(chunk_keys);
91  CHECK(required_buffers.find(chunk_key) != required_buffers.end());
92  populateChunkBuffersSafely(data_wrapper, required_buffers, optional_buffers);
93  disk_cache_->cacheTableChunks(chunk_keys);
94  if (optional_keys.size()) {
95  disk_cache_->cacheTableChunks(optional_keys);
96  }
97 
98  AbstractBuffer* buffer = required_buffers.at(chunk_key);
99  CHECK(buffer);
100 
101  buffer->copyTo(destination_buffer, num_bytes);
102 }
std::vector< ChunkKey > get_keys_vec_from_table(const ChunkKey &destination_chunk_key)
std::shared_ptr< ForeignDataWrapper > getDataWrapper(const ChunkKey &chunk_key)
std::set< ChunkKey > get_keys_set_from_table(const ChunkKey &destination_chunk_key)
std::map< ChunkKey, AbstractBuffer * > ChunkToBufferMap
void cacheTableChunks(const std::vector< ChunkKey > &chunk_keys)
AbstractBuffer * getCachedChunkIfExists(const ChunkKey &)
void createOrRecoverDataWrapperIfNotExists(const ChunkKey &chunk_key)
void getOptionalChunkKeySet(std::set< ChunkKey > &optional_chunk_keys, const ChunkKey &chunk_key, const std::set< ChunkKey > &required_chunk_keys, const ForeignDataWrapper::ParallelismLevel parallelism_level)
An AbstractBuffer is a unit of data management for a data manager.
void populateChunkBuffersSafely(ForeignDataWrapper &data_wrapper, ChunkToBufferMap &required_buffers, ChunkToBufferMap &optional_buffers)
void copyTo(AbstractBuffer *destination_buffer, const size_t num_bytes=0)
#define CHECK(condition)
Definition: Logger.h:197
ChunkToBufferMap getChunkBuffersForCaching(const std::vector< ChunkKey > &chunk_keys) const

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void foreign_storage::CachingForeignStorageMgr::getChunkMetadataVecForKeyPrefix ( ChunkMetadataVector chunk_metadata,
const ChunkKey chunk_key_prefix 
)
override

Definition at line 104 of file CachingForeignStorageMgr.cpp.

References disk_cache_, get_table_prefix(), foreign_storage::ForeignStorageCache::getCacheDirectoryForTable(), foreign_storage::ForeignStorageMgr::getChunkMetadataVecForKeyPrefix(), foreign_storage::ForeignStorageMgr::getDataWrapper(), and foreign_storage::wrapper_file_name.

Referenced by refreshAppendTableInCache(), and refreshNonAppendTableInCache().

106  {
107  auto [db_id, tb_id] = get_table_prefix(keyPrefix);
108  ForeignStorageMgr::getChunkMetadataVecForKeyPrefix(chunk_metadata, keyPrefix);
109  getDataWrapper(keyPrefix)->serializeDataWrapperInternals(
111 }
std::shared_ptr< ForeignDataWrapper > getDataWrapper(const ChunkKey &chunk_key)
const std::string wrapper_file_name
void getChunkMetadataVecForKeyPrefix(ChunkMetadataVector &chunk_metadata, const ChunkKey &chunk_key_prefix) override
std::string getCacheDirectoryForTable(int db_id, int tb_id) const
std::pair< int, int > get_table_prefix(const ChunkKey &key)
Definition: types.h:57

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int foreign_storage::CachingForeignStorageMgr::getHighestCachedFragId ( const ChunkKey table_key)
private

Definition at line 154 of file CachingForeignStorageMgr.cpp.

References CHUNK_KEY_FRAGMENT_IDX, disk_cache_, foreign_storage::ForeignStorageCache::getCachedMetadataVecForKeyPrefix(), and foreign_storage::ForeignStorageCache::hasCachedMetadataForKeyPrefix().

Referenced by refreshAppendTableInCache().

154  {
155  // Determine last fragment ID
156  int last_frag_id = 0;
157  if (disk_cache_->hasCachedMetadataForKeyPrefix(table_key)) {
158  ChunkMetadataVector cached_metadata;
159  disk_cache_->getCachedMetadataVecForKeyPrefix(cached_metadata, table_key);
160  for (const auto& [key, metadata] : cached_metadata) {
161  last_frag_id = std::max(last_frag_id, key[CHUNK_KEY_FRAGMENT_IDX]);
162  }
163  }
164  return last_frag_id;
165 }
#define CHUNK_KEY_FRAGMENT_IDX
Definition: types.h:42
void getCachedMetadataVecForKeyPrefix(ChunkMetadataVector &, const ChunkKey &) const
std::vector< std::pair< ChunkKey, std::shared_ptr< ChunkMetadata >>> ChunkMetadataVector
bool hasCachedMetadataForKeyPrefix(const ChunkKey &) const

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void foreign_storage::CachingForeignStorageMgr::populateChunkBuffersSafely ( ForeignDataWrapper data_wrapper,
ChunkToBufferMap required_buffers,
ChunkToBufferMap optional_buffers 
)
private

Definition at line 35 of file CachingForeignStorageMgr.cpp.

References foreign_storage::ForeignDataWrapper::populateChunkBuffers().

Referenced by fetchBuffer(), and refreshChunksInCacheByFragment().

38  {
39  try {
40  data_wrapper.populateChunkBuffers(required_buffers, optional_buffers);
41  } catch (const std::runtime_error& error) {
42  // clear any partially loaded but failed chunks (there may be some
43  // fully-loaded chunks as well but they will be cleared conservatively
44  // anyways)
45  for (const auto& [chunk_key, buffer] : required_buffers) {
46  if (auto file_buffer = dynamic_cast<File_Namespace::FileBuffer*>(buffer)) {
47  file_buffer->freeChunkPages();
48  }
49  }
50  for (const auto& [chunk_key, buffer] : optional_buffers) {
51  if (auto file_buffer = dynamic_cast<File_Namespace::FileBuffer*>(buffer)) {
52  file_buffer->freeChunkPages();
53  }
54  }
55 
56  throw ForeignStorageException(error.what());
57  }
58 }

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void foreign_storage::CachingForeignStorageMgr::recoverDataWrapperFromDisk ( const ChunkKey table_key,
const ChunkMetadataVector chunk_metadata 
)
private

Definition at line 113 of file CachingForeignStorageMgr.cpp.

References disk_cache_, get_table_prefix(), foreign_storage::ForeignStorageCache::getCacheDirectoryForTable(), foreign_storage::ForeignStorageMgr::getDataWrapper(), and foreign_storage::wrapper_file_name.

Referenced by createOrRecoverDataWrapperIfNotExists().

115  {
116  auto [db_id, tb_id] = get_table_prefix(table_key);
117  getDataWrapper(table_key)->restoreDataWrapperInternals(
119  chunk_metadata);
120 }
std::shared_ptr< ForeignDataWrapper > getDataWrapper(const ChunkKey &chunk_key)
const std::string wrapper_file_name
std::string getCacheDirectoryForTable(int db_id, int tb_id) const
std::pair< int, int > get_table_prefix(const ChunkKey &key)
Definition: types.h:57

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void foreign_storage::CachingForeignStorageMgr::refreshAppendTableInCache ( const ChunkKey table_key,
const std::vector< ChunkKey > &  old_chunk_keys 
)
private

Definition at line 167 of file CachingForeignStorageMgr.cpp.

References foreign_storage::ForeignStorageCache::cacheMetadataWithFragIdGreaterOrEqualTo(), CHECK, createOrRecoverDataWrapperIfNotExists(), disk_cache_, getChunkMetadataVecForKeyPrefix(), getHighestCachedFragId(), is_table_key(), and refreshChunksInCacheByFragment().

Referenced by refreshTableInCache().

169  {
170  CHECK(is_table_key(table_key));
172  int last_frag_id = getHighestCachedFragId(table_key);
173 
174  ChunkMetadataVector storage_metadata;
175  getChunkMetadataVecForKeyPrefix(storage_metadata, table_key);
176  try {
177  disk_cache_->cacheMetadataWithFragIdGreaterOrEqualTo(storage_metadata, last_frag_id);
178  refreshChunksInCacheByFragment(old_chunk_keys, last_frag_id);
179  } catch (std::runtime_error& e) {
181  }
182 }
bool is_table_key(const ChunkKey &key)
Definition: types.h:44
void getChunkMetadataVecForKeyPrefix(ChunkMetadataVector &chunk_metadata, const ChunkKey &chunk_key_prefix) override
void createOrRecoverDataWrapperIfNotExists(const ChunkKey &chunk_key)
void refreshChunksInCacheByFragment(const std::vector< ChunkKey > &old_chunk_keys, int last_frag_id)
std::vector< std::pair< ChunkKey, std::shared_ptr< ChunkMetadata >>> ChunkMetadataVector
void cacheMetadataWithFragIdGreaterOrEqualTo(const ChunkMetadataVector &metadata_vec, const int frag_id)
#define CHECK(condition)
Definition: Logger.h:197
int getHighestCachedFragId(const ChunkKey &table_key)

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void foreign_storage::CachingForeignStorageMgr::refreshChunksInCacheByFragment ( const std::vector< ChunkKey > &  old_chunk_keys,
int  last_frag_id 
)
private

Definition at line 200 of file CachingForeignStorageMgr.cpp.

References foreign_storage::ForeignStorageCache::cacheTableChunks(), CHECK, CHUNK_KEY_COLUMN_IDX, CHUNK_KEY_DB_IDX, CHUNK_KEY_FRAGMENT_IDX, CHUNK_KEY_TABLE_IDX, count, disk_cache_, get_table_key(), foreign_storage::ForeignStorageCache::getCachedChunkIfExists(), foreign_storage::ForeignStorageCache::getChunkBuffersForCaching(), foreign_storage::ForeignStorageMgr::getDataWrapper(), is_varlen_data_key(), is_varlen_key(), foreign_storage::ForeignStorageCache::isMetadataCached(), LOG, foreign_storage::anonymous_namespace{CachingForeignStorageMgr.cpp}::MAX_REFRESH_TIME_IN_SECONDS, populateChunkBuffersSafely(), and logger::WARNING.

Referenced by refreshAppendTableInCache(), and refreshNonAppendTableInCache().

202  {
203  int64_t total_time{0};
204  auto fragment_refresh_start_time = std::chrono::high_resolution_clock::now();
205 
206  if (old_chunk_keys.empty()) {
207  return;
208  }
209  // Iterate through previously cached chunks and re-cache them. Caching is
210  // done one fragment at a time, for all applicable chunks in the fragment.
211  ChunkToBufferMap optional_buffers;
212  std::vector<ChunkKey> chunk_keys_to_be_cached;
213  auto fragment_id = old_chunk_keys[0][CHUNK_KEY_FRAGMENT_IDX];
214  const ChunkKey table_key{get_table_key(old_chunk_keys[0])};
215  std::vector<ChunkKey> chunk_keys_in_fragment;
216  for (const auto& chunk_key : old_chunk_keys) {
217  if (chunk_key[CHUNK_KEY_FRAGMENT_IDX] < start_frag_id) {
218  continue;
219  }
220  if (disk_cache_->isMetadataCached(chunk_key)) {
221  if (chunk_key[CHUNK_KEY_FRAGMENT_IDX] != fragment_id) {
222  if (chunk_keys_in_fragment.size() > 0) {
223  auto required_buffers =
224  disk_cache_->getChunkBuffersForCaching(chunk_keys_in_fragment);
226  *getDataWrapper(table_key), required_buffers, optional_buffers);
227  chunk_keys_in_fragment.clear();
228  }
229  // At this point, cache buffers for refreshable chunks in the last fragment
230  // have been populated. Exit if the max refresh time has been exceeded.
231  // Otherwise, move to the next fragment.
232  auto current_time = std::chrono::high_resolution_clock::now();
233  total_time += std::chrono::duration_cast<std::chrono::seconds>(
234  current_time - fragment_refresh_start_time)
235  .count();
236  if (total_time >= MAX_REFRESH_TIME_IN_SECONDS) {
237  LOG(WARNING) << "Refresh time exceeded for table key: { " << table_key[0]
238  << ", " << table_key[1] << " } after fragment id: " << fragment_id;
239  break;
240  } else {
241  fragment_refresh_start_time = std::chrono::high_resolution_clock::now();
242  }
243  fragment_id = chunk_key[CHUNK_KEY_FRAGMENT_IDX];
244  }
245  // Key may have been cached during scan
246  if (disk_cache_->getCachedChunkIfExists(chunk_key) == nullptr) {
247  if (is_varlen_key(chunk_key)) {
248  CHECK(is_varlen_data_key(chunk_key));
249  ChunkKey index_chunk_key{chunk_key[CHUNK_KEY_DB_IDX],
250  chunk_key[CHUNK_KEY_TABLE_IDX],
251  chunk_key[CHUNK_KEY_COLUMN_IDX],
252  chunk_key[CHUNK_KEY_FRAGMENT_IDX],
253  2};
254  chunk_keys_in_fragment.emplace_back(index_chunk_key);
255  chunk_keys_to_be_cached.emplace_back(index_chunk_key);
256  }
257  chunk_keys_in_fragment.emplace_back(chunk_key);
258  chunk_keys_to_be_cached.emplace_back(chunk_key);
259  }
260  }
261  }
262  if (chunk_keys_in_fragment.size() > 0) {
263  auto required_buffers =
264  disk_cache_->getChunkBuffersForCaching(chunk_keys_in_fragment);
266  *getDataWrapper(table_key), required_buffers, optional_buffers);
267  }
268  if (chunk_keys_to_be_cached.size() > 0) {
269  disk_cache_->cacheTableChunks(chunk_keys_to_be_cached);
270  }
271 }
std::vector< int > ChunkKey
Definition: types.h:37
bool isMetadataCached(const ChunkKey &) const
std::shared_ptr< ForeignDataWrapper > getDataWrapper(const ChunkKey &chunk_key)
bool is_varlen_data_key(const ChunkKey &key)
Definition: types.h:70
#define LOG(tag)
Definition: Logger.h:188
#define CHUNK_KEY_DB_IDX
Definition: types.h:39
#define CHUNK_KEY_FRAGMENT_IDX
Definition: types.h:42
std::map< ChunkKey, AbstractBuffer * > ChunkToBufferMap
void cacheTableChunks(const std::vector< ChunkKey > &chunk_keys)
ChunkKey get_table_key(const ChunkKey &key)
Definition: types.h:52
AbstractBuffer * getCachedChunkIfExists(const ChunkKey &)
int count
#define CHUNK_KEY_TABLE_IDX
Definition: types.h:40
void populateChunkBuffersSafely(ForeignDataWrapper &data_wrapper, ChunkToBufferMap &required_buffers, ChunkToBufferMap &optional_buffers)
#define CHECK(condition)
Definition: Logger.h:197
ChunkToBufferMap getChunkBuffersForCaching(const std::vector< ChunkKey > &chunk_keys) const
#define CHUNK_KEY_COLUMN_IDX
Definition: types.h:41
bool is_varlen_key(const ChunkKey &key)
Definition: types.h:66

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void foreign_storage::CachingForeignStorageMgr::refreshNonAppendTableInCache ( const ChunkKey table_key,
const std::vector< ChunkKey > &  old_chunk_keys 
)
private

Definition at line 184 of file CachingForeignStorageMgr.cpp.

References foreign_storage::ForeignStorageCache::cacheMetadataVec(), CHECK, foreign_storage::ForeignStorageCache::clearForTablePrefix(), disk_cache_, getChunkMetadataVecForKeyPrefix(), is_table_key(), and refreshChunksInCacheByFragment().

Referenced by refreshTableInCache().

186  {
187  CHECK(is_table_key(table_key));
188  ChunkMetadataVector storage_metadata;
189  disk_cache_->clearForTablePrefix(table_key);
190  getChunkMetadataVecForKeyPrefix(storage_metadata, table_key);
191 
192  try {
193  disk_cache_->cacheMetadataVec(storage_metadata);
194  refreshChunksInCacheByFragment(old_chunk_keys, 0);
195  } catch (std::runtime_error& e) {
197  }
198 }
bool is_table_key(const ChunkKey &key)
Definition: types.h:44
void getChunkMetadataVecForKeyPrefix(ChunkMetadataVector &chunk_metadata, const ChunkKey &chunk_key_prefix) override
void refreshChunksInCacheByFragment(const std::vector< ChunkKey > &old_chunk_keys, int last_frag_id)
std::vector< std::pair< ChunkKey, std::shared_ptr< ChunkMetadata >>> ChunkMetadataVector
void cacheMetadataVec(const ChunkMetadataVector &)
#define CHECK(condition)
Definition: Logger.h:197

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void foreign_storage::CachingForeignStorageMgr::refreshTable ( const ChunkKey table_key,
const bool  evict_cached_entries 
)
overridevirtual

Reimplemented from foreign_storage::ForeignStorageMgr.

Definition at line 122 of file CachingForeignStorageMgr.cpp.

References CHECK, foreign_storage::ForeignStorageMgr::checkIfS3NeedsToBeEnabled(), foreign_storage::ForeignStorageCache::clearForTablePrefix(), foreign_storage::ForeignStorageMgr::clearTempChunkBufferMapEntriesForTable(), disk_cache_, is_table_key(), and refreshTableInCache().

123  {
124  CHECK(is_table_key(table_key));
127  evict_cached_entries ? disk_cache_->clearForTablePrefix(table_key)
128  : refreshTableInCache(table_key);
129 }
bool is_table_key(const ChunkKey &key)
Definition: types.h:44
static void checkIfS3NeedsToBeEnabled(const ChunkKey &chunk_key)
void refreshTableInCache(const ChunkKey &table_key)
#define CHECK(condition)
Definition: Logger.h:197
void clearTempChunkBufferMapEntriesForTable(const ChunkKey &table_key)

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void foreign_storage::CachingForeignStorageMgr::refreshTableInCache ( const ChunkKey table_key)
private

Definition at line 131 of file CachingForeignStorageMgr.cpp.

References CHECK, CHUNK_KEY_DB_IDX, CHUNK_KEY_TABLE_IDX, disk_cache_, foreign_storage::ForeignStorageCache::getCachedChunksForKeyPrefix(), Catalog_Namespace::SysCatalog::getCatalog(), foreign_storage::ForeignStorageCache::hasCachedMetadataForKeyPrefix(), Catalog_Namespace::SysCatalog::instance(), is_table_key(), foreign_storage::ForeignStorageCache::recoverCacheForTable(), refreshAppendTableInCache(), and refreshNonAppendTableInCache().

Referenced by refreshTable().

131  {
132  CHECK(is_table_key(table_key));
133 
134  // Before we can refresh a table we should make sure it has recovered any data
135  // if the table has been unused since the last server restart.
136  if (!disk_cache_->hasCachedMetadataForKeyPrefix(table_key)) {
137  ChunkMetadataVector old_cached_metadata;
138  disk_cache_->recoverCacheForTable(old_cached_metadata, table_key);
139  }
140 
141  // Preserve the list of which chunks were cached per table to refresh after clear.
142  std::vector<ChunkKey> old_chunk_keys =
144  auto catalog =
146  CHECK(catalog);
147  bool append_mode =
148  catalog->getForeignTableUnlocked(table_key[CHUNK_KEY_TABLE_IDX])->isAppendMode();
149 
150  append_mode ? refreshAppendTableInCache(table_key, old_chunk_keys)
151  : refreshNonAppendTableInCache(table_key, old_chunk_keys);
152 }
void refreshAppendTableInCache(const ChunkKey &table_key, const std::vector< ChunkKey > &old_chunk_keys)
bool is_table_key(const ChunkKey &key)
Definition: types.h:44
#define CHUNK_KEY_DB_IDX
Definition: types.h:39
void refreshNonAppendTableInCache(const ChunkKey &table_key, const std::vector< ChunkKey > &old_chunk_keys)
static SysCatalog & instance()
Definition: SysCatalog.h:292
#define CHUNK_KEY_TABLE_IDX
Definition: types.h:40
std::vector< std::pair< ChunkKey, std::shared_ptr< ChunkMetadata >>> ChunkMetadataVector
bool recoverCacheForTable(ChunkMetadataVector &, const ChunkKey &)
std::shared_ptr< Catalog > getCatalog(const std::string &dbName)
std::vector< ChunkKey > getCachedChunksForKeyPrefix(const ChunkKey &) const
#define CHECK(condition)
Definition: Logger.h:197
bool hasCachedMetadataForKeyPrefix(const ChunkKey &) const

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Member Data Documentation


The documentation for this class was generated from the following files: